Using data on federal elections for both the Upper and Lower Houses in Australia and the Herfindahl-Hirschman Index (HHI), we explore whether the contestability/concentration varies across elections. Our results show significant movements in contestability over time. The results also imply a smaller degree of concentration than we would expect to find in a two-party system. To the extent that the Upper House (Senate)-until the 2004 election-is not controlled by the executive, this implies a greater level of political competition, and choice for voters, than that associated with two-party systems.
CITATION STYLE
Davidson, S., Farrell, L., Fry, T. R. L., & Mihajilo, S. (2008). Contestability of Australian federal elections. Australian Journal of Political Science, 43(3), 547–554. https://doi.org/10.1080/10361140802267308
Mendeley helps you to discover research relevant for your work.